Alert archive / Michigan / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 13, NWS Grand Rapids, MI

April 26, 2011Allegan County, Barry County, Kent County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Apr 26, 2011, 6:43 PM EDT for Allegan County, Barry County, Kent County, Michigan. It was in force for 47 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 26, 2011, 6:43 PM EDT (22:43 UTC)
Expired: Apr 26, 2011, 7:30 PM EDT
In force: 47 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Allegan County, MI, Barry County, MI, Kent County, MI

The radar

The Grand Rapids radar (KGRR), 28 km from the middle of the area, began a volume at 22:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Apr 26, 7:08 PM EDT	HAIL 1	1 E Cutlerville, MI

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 26, 3:02 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 10.7 hours before the alert went out and 193 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 547 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 687 m²/s²
0-3 km storm-relative helicity: 744 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

927 
WUUS53 KGRR 262243
SVRGRR
MIC005-015-081-262330-
/O.NEW.KGRR.SV.W.0013.110426T2243Z-110426T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
643 PM EDT TUE APR 26 2011

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ALLEGAN COUNTY IN SOUTHWEST MICHIGAN...
  NORTHWESTERN BARRY COUNTY IN SOUTHWEST MICHIGAN...
  SOUTHWESTERN KENT COUNTY IN SOUTHWEST MICHIGAN...

* UNTIL 730 PM EDT

* AT 639 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE HAIL...
  AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 8
  MILES NORTH OF ALLEGAN..AND MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WAYLAND...            CUTLERVILLE...        DUTTON...
  CALEDONIA...          MOLINE...             BURNIPS...
  HOPKINS...            DORR...               GREEN LAKE...
  CORNING...            DIAMOND SPRINGS...    MONTEREY...
  HOPKINSBURG...        DUNNINGVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES
PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

A TORNADO WATCH IS IN EFFECT FOR THE AREA. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. IF TORNADO IS SPOTTED...ACT
QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING
FOR SOUTHWESTERN MICHIGAN.

LAT...LON 4264 8603 4274 8583 4277 8579 4281 8571
      4289 8559 4274 8544 4252 8589
TIME...MOT...LOC 2243Z 226DEG 39KT 4267 8586
WIND...HAIL 60MPH 1.00IN

$$

MEADE

1 follow-up statement

934 
WWUS53 KGRR 262303
SVSGRR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
703 PM EDT TUE APR 26 2011

MIC005-015-081-262330-
/O.CON.KGRR.SV.W.0013.000000T0000Z-110426T2330Z/
BARRY MI-KENT MI-ALLEGAN MI-
703 PM EDT TUE APR 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
ALLEGAN...SOUTHWESTERN KENT AND NORTHWESTERN BARRY COUNTIES UNTIL 730
PM EDT...

AT 702 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES NORTH OF
WAYLAND...MOVING NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  CUTLERVILLE...        DUTTON...             CALEDONIA...
  MOLINE...             GREEN LAKE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES
PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING
FOR SOUTHWESTERN MICHIGAN.

LAT...LON 4273 8556 4273 8585 4274 8583 4277 8579
      4281 8571 4289 8559 4274 8544
TIME...MOT...LOC 2303Z 234DEG 39KT 4280 8566
WIND...HAIL 60MPH 1.00IN

$$

The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 26, 11:16 AM EDT	River Flood Advisory	GRR	Kent	10 days
Apr 26, 11:16 AM EDT	River Flood Advisory	GRR	Osceola	37 hr
Apr 26, 3:21 PM EDT	Flood Watch	GRR	Allegan, Barry, Calhoun, Clare, Clinton, Eaton and 17 more	44 hr
Apr 26, 4:16 PM EDT	Special Weather Statement	GRR	Ottawa	59 min
Apr 26, 5:27 PM EDT	Special Weather Statement	GRR	Kent	63 min
Apr 26, 5:28 PM EDT	River Flood Advisory	GRR	Allegan	6 days
Apr 26, 5:34 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Kent, Ottawa	41 min
Apr 26, 5:44 PM EDT	Severe Thunderstorm Warning	GRR	Gratiot, Isabella, Montcalm	46 min
Apr 26, 5:48 PM EDT	Areal Flood Advisory	GRR	Allegan, Kent, Ottawa	12 hr
Apr 26, 6:04 PM EDT	Severe Thunderstorm Warning	GRR	Kalamazoo, Van Buren	56 min
Apr 26, 6:14 PM EDT	Severe Thunderstorm Warning	GRR	Ionia, Kent, Montcalm	46 min
Apr 26, 6:35 PM EDT	Tornado Warning	GRR	Ionia, Kent, Montcalm	25 min
Apr 26, 6:48 PM EDT	Severe Thunderstorm Warning	GRR	Gratiot, Montcalm	42 min
Apr 26, 6:59 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Barry, Kalamazoo	46 min
Apr 26, 7:04 PM EDT	River Flood Advisory	GRR	Isabella	15 hr
Apr 26, 7:07 PM EDT	Tornado Warning	GRR	Gratiot, Montcalm	23 min
Apr 26, 7:12 PM EDT	Severe Thunderstorm Warning	GRR	Kent	31 min
Apr 26, 7:20 PM EDT	Tornado Warning	GRR	Barry, Calhoun, Kalamazoo	25 min
Apr 26, 7:25 PM EDT	Severe Thunderstorm Warning	GRR	Gratiot, Isabella	50 min
Apr 26, 7:37 PM EDT	Severe Thunderstorm Warning	GRR	Ionia, Montcalm	38 min
Apr 26, 7:43 PM EDT	Tornado Warning	GRR	Barry, Eaton	32 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.